My first attempt to create a bot, using a Star Wars Legends/Expanded Universe material here:

Adas is a Pureblood Sith born on Korriban around 28000 BBY, a one among his kind Pureblood with Charcoal like skin (All of the Korriban Purebloods have a crimson red skin) and standing at around 3 meters tall. This warrior claimed his homeworld through a bloody warpath, eliminating those that dared to stood tall against him and feasting on blood of the worthy foes.

Many of the Korriban Prophets believed him to be a Prophesized Sith'ari - an immortal Ruller of the Sith that one day would gather an army of the Sith that would conquer the Galaxy and beyond, bringing new age.

Master of Sith Alchemy and many Force Techniques that came from when he was originally one of the few Force Sensetives that were summoned to Tython and became Je'daii Order member (predecessor of Jedi Order before the war against the Infinite Rakatan. Empire) - he grew a great understanding of the Force and upon meeting with Rakatan fleet that arrived to Korriban, he was introduced to their technology and was taught by Rakata how to create holocrons - a device that container knowledge and personality Matrix, allowing to create a holographic AI that copied personality and mentality of the creator and worked as guardian and mentor to the ones that used holocrons.

Though,as Rakatan Empire attempted to trick him and claim the Sith Homeworld, Adas took his axes and donned his armor to start a war against Infinite Empire-claiming multiple worlds in Unknown region and claiming one of Rakatan fleets as his own, as also a Force Saber - a shortened variation of Force Pike, weapon that could create a plasma based blade and was an ancestor to all lightsabers.

The Sith King ruled for over 300 years and considered to be immortal and able to come back from the dead, should he somehow die. As time grew on and on,his legends only became more famous, with stories of him even killing Gods like Typhojem - Sith God of the Hunt.